Monday, April 30, 2018

2 Years of Record Global Cooling ... Ho-Hum

RealClearMarkets has a column about a major two-year global cooling event, and how such things are not often reported.
The greatest global two-year cooling event of the last century just occurred. From February 2016 to February 2018 (the latest month available) global average temperatures dropped 0.56°C. You have to go back to 1982-84 for the next biggest two-year drop, 0.47°C—also during the global warming era.

The 2016-18 Big Chill was composed of two Little Chills, the biggest five month drop ever (February to June 2016) and the fourth biggest (February to June 2017).

If someone is tempted to argue that the reason for recent record cooling periods is that global temperatures are getting more volatile, it's not true. The volatility of monthly global average temperatures since 2000 is only two-thirds what it was from 1880 to 1999.

Statistical cooling outliers garner no media attention. The global average temperature numbers come out monthly. If they show a new hottest year on record, that's a big story.

When they show cooling of any sort—and there have been more cooling months than warming months since anthropogenic warming began—there's no story.

There should be equal attention on warming and cooling records. Coverage should be based on how unusual the event is, not whether or not it increases support for favored policies. (snip) Very unusual events, 3 standard deviations and more, deserve investigation
Amen.